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author | Bhasker Hariharan <bhaskerh@google.com> | 2020-01-26 18:32:52 -0800 |
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committer | gVisor bot <gvisor-bot@google.com> | 2020-01-26 18:35:01 -0800 |
commit | 68514d4ba3f7c06a89a8d0cd79327ede62dae65b (patch) | |
tree | 947cb7427ce775b85e9e3be396eb52c6426b919c /pkg/control/server/server.go | |
parent | 18a7e1309decb9bc09879e337adbc00f81d420c5 (diff) |
Unroll checksum computation loop.
Checksum computation is one of the most expensive bits of
packet processing. Manual unrolling of the loop provides
significant improvement in checksum speed.
Updates #1656
BenchmarkChecksum/checksum_64-12 49834124 23.6 ns/op
BenchmarkChecksum/checksum_128-12 27111997 44.1 ns/op
BenchmarkChecksum/checksum_256-12 11416683 91.5 ns/op
BenchmarkChecksum/checksum_512-12 6375298 174 ns/op
BenchmarkChecksum/checksum_1024-12 3403852 338 ns/op
BenchmarkChecksum/checksum_1500-12 2343576 493 ns/op
BenchmarkChecksum/checksum_2048-12 1730521 656 ns/op
BenchmarkChecksum/checksum_4096-12 920469 1327 ns/op
BenchmarkChecksum/checksum_8192-12 445885 2637 ns/op
BenchmarkChecksum/checksum_16384-12 226342 5268 ns/op
BenchmarkChecksum/checksum_32767-12 114210 10503 ns/op
BenchmarkChecksum/checksum_32768-12 99138 10610 ns/op
BenchmarkChecksum/checksum_65535-12 53438 21158 ns/op
BenchmarkChecksum/checksum_65536-12 52993 21067 ns/op
BenchmarkUnrolledChecksum/checksum_64-12 61035639 19.1 ns/op
BenchmarkUnrolledChecksum/checksum_128-12 36067015 33.6 ns/op
BenchmarkUnrolledChecksum/checksum_256-12 19731220 60.4 ns/op
BenchmarkUnrolledChecksum/checksum_512-12 9091291 116 ns/op
BenchmarkUnrolledChecksum/checksum_1024-12 4976406 226 ns/op
BenchmarkUnrolledChecksum/checksum_1500-12 3685224 328 ns/op
BenchmarkUnrolledChecksum/checksum_2048-12 2579108 447 ns/op
BenchmarkUnrolledChecksum/checksum_4096-12 1350475 887 ns/op
BenchmarkUnrolledChecksum/checksum_8192-12 658248 1780 ns/op
BenchmarkUnrolledChecksum/checksum_16384-12 335869 3534 ns/op
BenchmarkUnrolledChecksum/checksum_32767-12 168650 7095 ns/op
BenchmarkUnrolledChecksum/checksum_32768-12 168075 7098 ns/op
BenchmarkUnrolledChecksum/checksum_65535-12 75085 14277 ns/op
BenchmarkUnrolledChecksum/checksum_65536-12 75921 14127 ns/op
PiperOrigin-RevId: 291643290
Diffstat (limited to 'pkg/control/server/server.go')
0 files changed, 0 insertions, 0 deletions